<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404 Not Found - Page Not Found</title>
    <style>
        @import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;700&display=swap');

        body {
            font-family: 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
            background-color: #f0f2f5;
            color: #333;
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            text-align: center;
        }

        .container {
            background-color: #ffffff;
            padding: 40px 60px;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            max-width: 600px;
            width: 90%;
            transition: transform 0.3s ease-in-out;
        }

        .container:hover {
            transform: translateY(-5px);
        }

        h1 {
            color: #dc3545; /* 使用红色来表示错误 */
            font-size: 2.5em;
            margin-bottom: 20px;
            font-weight: 700;
        }

        p {
            font-size: 1.2em;
            line-height: 1.6;
            margin-bottom: 25px;
            font-weight: 300;
        }

        .home-button {
            display: inline-block;
            margin-top: 20px;
            padding: 12px 25px;
            background-color: #007bff; /* 按钮使用主蓝色 */
            color: #ffffff;
            text-decoration: none;
            border-radius: 6px;
            font-weight: 700;
            transition: background-color 0.3s ease, transform 0.2s ease;
        }

        .home-button:hover {
            background-color: #0056b3;
            transform: translateY(-2px);
        }

        footer {
            margin-top: 30px;
            font-size: 0.9em;
            color: #888;
        }
    </style>
</head>
<body>

    <div class="container">
        <h1>🤔 404 Not Found 🤔</h1>
        <p>糟糕！您正在寻找的页面似乎“离家出走”了。<br>它可能已被移动、删除，或者从未存在过。</p>
        
        <a href="/index.html" class="home-button">返回首页</a>

        <footer>
            Your Awesome HTTP Server
        </footer>
    </div>

</body>
</html>